Use After Free in The X11 Project Libx11
CVE-2020-14363
An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The h…
Vulnerability class: Integer Overflow
EPSS: 0.006 (43.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- The X11 Project Libx11 — versions 1.6.12
- X.org Libx11
- Fedoraproject Fedora — versions 33
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (Exploit, Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (x_refsource_MISC, Vendor Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_FEDORA, vendor-advisory)
Frequently asked questions
- What is CVE-2020-14363?
- CVE-2020-14363 is a high-severity vulnerability in The X11 Project Libx11, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2020-09-11.
- How severe is CVE-2020-14363?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-14363 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.